2002 and newer Radio Module – w/Nav
Pin No. / Wire Color / Function
Large Black Plug x18126
1 / Blue-Black / Right Rear + output to amp (twisted with 5)
2 / Blue-Red / Right Front + output to amp (twisted with 6)
3 / Yellow-Red / Left Front + output to amp (twisted with 7)
4 / Yellow-Black / Left Rear + output to amp (twisted with 8)
5 / Blue-Black / Right Rear + output to amp (twisted with 1)
6 / Blue-Red / Right Front + output to amp (twisted with 2)
7 / Yellow-Red / Left Front + output to amp (twisted with 3)
8 / Yellow-Black / Left Rear + output to amp (twisted with 4)
9 / White-Yellow bands / I-bus?
10 / White-Brown / Mute from phone?
11 / White-Green / ?
12 / Brown / Ground
13 / White / Remote on-off to amp
14 / Grey-Red / Dash illumination (dimmer)
15 / Red-Green / +12v from battery (not switched)
16 / Violet-White / +12v from ignition (ACC and RUN)
small white plug x13598
Pin No. / Wire Color / Function
1 / / No function
2 / White-Brown / Audio common from 6CD player
3-7 / / No connection
8 / White-Red / Audio Left Channel from 6CD player
9 / White-Blue / Audio Right Channel from 6CD player
10 / / No Connection
11 / NAV / TV Audio +
12 / NAV / TV Audio –
NEW Small black plug: x13649 plug
Pin No. / Wire Color / Function
1 / Tape left +
2 / Tape left –
3 / Left Connection for AUX Input
4 / Right Connection for AUX Input
5 / NAV / TV Audio +
6 / White-Black / Phone audio + Positive
7 / Tape right +
8 / Tape right –
9 / No connection
10 / AUX Input Ground
11 / NAV / TV Audio +
12 / Brown-Black / Phone Audio – Groundv
2000 – 2001 Radio Module – w/Nav
Pin No. / Function
1 / Speaker – Front Left (+)
2 / Speaker – Front Right (+)
3 / Speaker – Rear Left (+)
4 / Telephone Mute
5 / +12v from ignition (ACC and RUN)
6 / Speaker – Rear Right (+)
7 / DAC – i-bus
8 / Speaker – Front Left (-)
9 / Back Up (?) (terminal 30 – Fuse F56)
10 / GAL – speed signal
11 / Speaker Front Right (-)
12 / Speaker Rear Left (-)
13 / Nighttime Illumination Signal
14 / Speaker Rear Right (-)
15 / Ground
16 / Auto Antenna – diversity
17 / Not Used (LAC)
x18805:
Pin No. / Function
1 / Audio Cassette Right (+)
2 / Audio Cassette Right (-)
3-4 / No connection
5 / Low Frequency Signal (-) – Nav Control Module / Video Module
6 / Audio Cassette Left (+)
7 / Audio Cassette Left (-)
8-9 / No Connection
10 / Low Frequency Signal (+) – Nav Control Module / Video Module
x01037
Pin No. / Function
1 / Low Frequency Voltage Signal CD Changer Left
2 / Low Frequency Voltage Signal CD Changer Right
3 / Shield – audio shield
4-5 / No Connection
6 / Low Frequency Voltage Signal CD Changer Left
7 / Low Frequency Voltage Signal CD Changer Right
8-10 / No Connection
The following link is diagram of the X5 hi-fi amplifier (non-DSP). You will need the Adobe SVG plug-in to view it.
http://www.bmwmotorsports.org/crew/ucrewx5/pdf/SP0000014774.svg
Or you can piece together these three images:
In case you are not familiar with the German colors
BR brown
GE yellow
GN green
OR orange
VI violet
GR grey
SW black
WS white
RT red
BL blue
TR transparent
In the diagram the module N9 is the radio (or the Business CD unit), H55 is the left front midrange speaker, and H54 is the right right front midrange speaker, both being on top of the dash.
Signals TLH+/- are for the rear left woofer
Signals MTHL+/- are for the midrange speaker/tweeter, rear left
Signals TLV+/- are for the front left woofer
Signals HLV+/- are for the front left tweeter
Signals HRV+/- are for the front right tweeter
Signals TRV+/- are for the front right woofer
Signals MTHR+/- are for the midrange speaker/tweeter, rear right Signals TRH+/- are for the rear right woofer